html,
body {
    height: 100%;
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-box {
    width: 40%;
    height: 40%;
    min-width: 320px;
    min-height: 280px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    box-sizing: border-box;
}

.login-box h2 {
    margin-bottom: 20px;
    font-weight: normal;
    color: #333;
}

.login-box input {
    width: 100%;
    padding: 10px 12px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

.login-box button {
    width: 100%;
    padding: 10px;
    margin-top: 12px;
    background: #ff6633;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 15px;
    cursor: pointer;
}

.login-box button:hover {
    background: #e55a2b;
}

.login-box .link {
    margin-top: 12px;
    font-size: 13px;
    color: #666;
}

.login-box .link a {
    color: #ff6633;
}